Home / 856,206.90-1,283,413.68-287,448.39

Finding the Fourth Proportional to 856,206.90, 1,283,413.68 and 287,448.39

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Solution

The fourth proportional to 856,206.90, 1,283,413.68 and 287,448.39 is: 430,871.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,206.90 : 1,283,413.68 = 287,448.39 : x
  2. Step 2: Convert to fraction form
    856,206.90/1,283,413.68 = 287,448.39/x
  3. Step 3: Cross multiply
    856,206.90x = 1,283,413.68 × 287,448.39
  4. Step 4: Simplify right side
    856,206.90x = 368,915,196,019.98
  5. Step 5: Solve for x
    x = 368,915,196,019.98/856,206.90
  6. Step 6: Final answer
    x = 430,871.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.